api重复引用导致的诡异问题排查

最近一个项目上线前开发环境、测试环境都能正常打包并运行。然而到了准生产环境和生产环境则报一些诡异的错误信息：

[INFO] ------------------------------------------------------------------------[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project xxx: Compilation failure: Compilation failure:[ERROR] /data/release/xxx/xxx/src/main/java/com/xxx/testmodel/util/ZipRsaCiph.java:[19,15] BASE64Decoder is internal proprietary API and may be removed in a future release[ERROR] /data/release/xxx/xxx/src/main/java/com/xxx/testmodel/util/ZipRsaCiph.java:[19,15] BASE64Decoder is internal proprietary API and may be removed in a future release[ERROR] /data/release/xxx/xxx/src/main/java/com/xxx/testmodel/util/ZipRsaCiph.java:[19,15] BASE64Decoder is internal proprietary API and may be removed in a future release[ERROR] /data/release/xxx/xxx/src/main/java/com/xxx/testmodel/util/ZipRsaCiph.java:[19,15] BASE64Decoder is internal proprietary API and may be removed in a future release[ERROR] /data/release/xxx/xxx/src/main/java/com/xxx/testmodel/util/ZipRsaCiph.java:[64,9] BASE64Decoder is internal proprietary API and may be removed in a future release[ERROR] /data/release/xxx/xxx/src/main/java/com/xxx/testmodel/aop/Author.java:[95,90] error: cannot find symbol[ERROR] -> [Help 1][ERROR][ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.[ERROR] Re-run Maven using the -X switch to enable full debug logging.[ERROR][ERROR] For more information about the errors and possible solutions, please read the following articles:[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException[ERROR][ERROR] After correcting the problems, you can resume the build with the command

咋一看莫名其妙，代码怎么找也找不到问题所在。查看代码修改部分，发现是重新引入了一个新的api。

通过mvn dependency:tree发现，同时引用了 test-api: 和 test-api: 两个版本的api。

而通过mvn dependency:analyze查看的结果为：

[WARNING] Used undeclared dependencies found:[WARNING]    com.xxx.auth:xxx-api:jar:2.0.0:compile[WARNING] Unused declared dependencies found:[WARNING]    com.xxx.auth:xxx-api:jar:3.12.0:compile

发现并没有引用新的api。

Used undeclared dependencies ：指那些在项目中直接使用到的，但没有在POM中配置的依赖。

Unused declared dependencies ：供我们参考，这表示那些我们配置了，但并未直接使用的依赖。

后来分析发现是有个第三方 api 引用了相同的api，从而导致这一诡异问题的出现。因而在引用api前可通过：

mvn dependency:tree 和 mvn dependency:analyze 看是否存在重复引用的api，如果存在重复引用的情况可将不需要的版本api排除掉即可。

      
     
      xxx
       
     
      xxx-api
       
     
      1.0
       
         
            
       
        test
             
       
        test-api